Extend your playing time with boost Pak for Nintendo Switch. Boost Pak allows you to keep playing after the internal battery on your Nintendo Switch runs out. Featuring a 2500 mah battery, boost Pak will provide up to 3 additional hours of playing time and keeps you going when you're away from your dock or power source. The sleek design allows for boost Pak to attach to the bottom of the Nintendo Switch Console and stay attached while in the dock. No need to remove boost Pak, it charges in the dock! it can also be charged with a USB Type-C cable. Boost Pak is turned on via the button on the back and the front facing lights keep you informed on the charging status.